Cannabis extraction operations shall NOT be located in any building containing which of the following occupancies?

An update to Underground Feeder and Branch-Circuit Cable (Type UF) now permits the use of _______ conductors as the minimum size for this burial type cable. (This popular cable commonly used in residential and light commercial underground applications can run long distances so this change can be a considerable cost savings.)

A grounding electrode conductor ________ through ventilation, mounting slots, or weep holes of an enclosure like a transformer. (To address a common misapplication in the field risking mechanical damage to the GEC, affecting water drainage, and GEC support.)

The NEC has eliminated ________ as an option for securing Mineral-Insulated (Type MI) cable. (Type MI cable is often used for fire alarms, high temperature locations, and emergency systems. It can be vulnerable to mechanical stresses during the installation.)

The residential installation of receptacle outlets on the walls of cabinets with countertops or work surfaces shall now be installed no less than _______ below that countertop. (Recent code cycles restricted the number and locations because of the large number of inuries to crumb crunchers as a result of pulling the appliance cords. Kitchen appliance cords are 2 feet long.)

Knife switches used for isolating rated less than ______ shall be considered general?use switches.

Which of the following is REQUIRED for bonding an equipotential plane under NEC 547?(This change makes it clear and enforceable standard for constructing equipped potential planes in agricultural environments )

In a major change, there is now a new size limitation to permit a ________ minimum size copper conductor to serve lighting outlets and exhaust fans in bathrooms and laundry rooms. (Current demand can now be relatively lower in homes with LED lighting and compact fan units are standard)

Which of the following is required for a faceplate that incorporates a night light and is installed over a receptacle outlet?

The NEC requirement to provide an Intersystem Bonding Termination (IBT) device at the service equipment and separate structure now additionally able to be secured and connect directly to ___________. (ITBs are used as a common grounding point for other systems like telephone, cable, and broadband. These are frequently grounded improperly if at all.)

New Article 206 outlines the general requirements for ________. (Non-Powered-Limited circuits can pose a bigger risk for fire and shock. Previously this content was limited to Chapter 3.)

Section 501.3(B) of the 2026 NEC is ____________.

Which of the following correctly describes the requirements for grounding switches used in medium? and high?voltage equipment?(This new section brings clarity and structure to the application by mandating key safeguards that help prevent accidental energization or unsafe switching sequences )

Part II of Article 517 applies to which of the following?

Intermediate Metal Conduit (IMC) is permitted in areas subject to even severe corrosive influences provided they are protected by corrosion protection approved for the condition such as _______. (Some of these locations include agricultural with fertilizer exposure, wastewater facilities, coastal areas with salt environments, and industrial sites.)

The NEC code section that governs the maximum number of disconnects each service can have (the two to six rule) has also been updated regarding how the disconnects can be physically arranged including _____________. (To also address maintenance safety and arc-flash protection.)

Service disconnects in other than one- and two-family dwellings shall now be marked _______. (To also help reduce delays and confusion for first responders and utilities, especially with services with multiple disconnects such as solar.)

There is now a new size limitation to permit a ______ minimum size Copper-Clad Aluminum Conductor to serve lighting outlets and exhaust fans in bathrooms and laundry rooms. (A Copper-Clad conductor has copper on the outside and aluminum in the center. Be sure to use wirenuts rated for copper and aluminum AL/CU.)

The NEC requires central heating equipment to be supplied by an individual branch circuit. Under the 2026 revision, which additional load is permitted on the same branch circuit?

In the electrical trade, the term wiring devices commonly refers to which of the following?

Each dispensing device shall be provided with a means to remove all external voltage sources during maintenance and service. This disconnecting means shall remove ungrounded and grounded power conductors, communication, data, and video circuits. The location of this means is permitted to be __________.

When installing a Type 2 Surge Protection Device (SPD), the NEC provides 3 situations with separate subpart requirements. The installer shall ___________. (The previous interpretation was considered impractical and sometimes technically incompatible.)

Branch circuits serving life?safety lighting and power circuits shall NOT be installed as which of the following?(Multi wire branch circuits are generally allowed in many types of installations however their use of life safety system pose risks especially in critical environments like hospitals for instance a single open neutral could disable multiple circuits simultaneously reliability and Redundancy are paramount for life and safety loads )

Power sources for the Essential Electrical System (EES) shall be one or more of the following: (These updates ensure that both on site and off site power sources are designed for sufficient reliability to support the faculties emergency operation plan )

When raceways are installed in a wet location above grade level they now shall _______. (Moisture accumulation can be an issue in environments such as food processing plants, car washes, and swimming pools.)

Fixed storage type water heaters 120 gallons or less are now classified as ? (Finally, clarity sometimes we need that )

An EES that uses a single on?site power source must include a permanent switching means to connect a portable or temporary on?site power source. Which of the following is REQUIRED?(Temporary power source connection refers to an intern power source used in the primary power source is unavailable or during maintenance )

Service equipment beyond what is specified in 230.2 A shall be _______. (With the changing times, service equipment may need to be modified or custom-built in the field.)

A new list item added as an approved method for supporting and securing Metal-Clad Cable (Type MC) is _________. (Designed to restrain cables from whipping during a fault condition which can cause damage.)

As a general rule, receptacle outlets shall now not be installed within ________ of residential kitchen cabinets with countertops or work surfaces. (Apparently we installers would place these receptacles close so the power supply cord of an appliance could reach in the absence of suitable wall space.)

The Essential Electrical System (EES) shall be divided into which branches, and where shall the division occur when more than one transfer switch is required? (The 2026 NEC edition this section’s title was updated to essential electrical systems and the terms nursing home and limited care faculties were removed the title now better reflects its content )

Automatic controls like motion sensors or time based controllers ________ as the sole means of controlling illumination in attics, underfloor spaces, and utility rooms. (To ensure that we are not left stranded in the dark in a potentially dangerous tight space.)

Grounding electrode conductors shall generally be continuous without a splice. A new exception to that rule includes ______ that is accessible. (Please note that this new option must be accessible for inspection and maintenance after installation…does that include burial?)

In the ampacity tables, the temperature rating of conductor type XHWN has been changed and it now sits in the _________ column of the table. (An example of a correction because XHWN was in the wrong column in previous code cycles.)

A new list item now permits grounded neutral conductors sized 6 AWG and smaller with white or gray insulation to have a ________. (This should help match a neutral to the corresponding phase conductors in a raceway with other conductors. ( This has already been done in other countries.)

For services over 1000 volts AC or 1500 volts DC, if the short circuit protection device (OCPD) is not an integral part of the service disconnecting means, it ________ (to assure that the disconnect is readily accessible.)

New NEC Article 268 covers services over 1000 volts AC or 1500 volts DC and acknowledges that supervised installations can have grounding and bonding designed by _______. (A formal introduction of customized conductor sizing for high voltage systems.)

The NEC created a new code section for branch circuits over 1000 volts AC that allows conductor sizing to be determined by other than the NEC tables if the installation is __________. (This acknowledges that these can be complicated systems requiring flexibility.)

Branch-circuit disconnecting means rated 1000 amperes or more, solidly grounded, but not exceeding ____ volts line to line now mandates GFCI protection even for DC systems. (The NEC is trying to keep up with the increased usage of DC power such as in data centers, EV charging, energy storage systems, and large scale solar.)

In ___________ installations with multiple energy sources, those sources not located adjacent to the service disconnect must now be marked and identified on the plaque or directory with their location. (Many of these more common disconnects are installed in locations such as garages, sheds, basements, and rooftops.)

Lighting equipment identified for horticultural use shall be supplied by outlets protected in accordance with which of the following?

According to 2026 NEC the outdoor disconnecting means for a split?system HVAC unit in other than one? and two?family dwellings must be marked with which of the following?

If a 14 AWG Copper-Clad Aluminum Conductor is used to supply a branch circuit, the maximum overcurrent protection (circuit breaker) device rating is ___________. (This major change is the NEC response and solution to lower power usage. Copper-Clad seems lighter and more flexible to use but more subjectable to damage. This circuit is not allowed to supply receptacle outlets.)

Receptacles shall not be installed in a face?up position in which of the following locations? (The NEC prohibits installing receptacles face?up on work surfaces because liquids can spill directly into the device,debris can fall into the openings and It creates a shock and contamination hazard)

All activities, systems, and equipment that are new or altered in patient care spaces shall be designed and installed to meet the requirements of which of the following?(NFPA 99 category 1 failure likely to cause major injury or death category two failure could cause minor injury category three failure unlikely to cause injury but may cause discomfort category 4 failure has no impact on safety or care )

Which of the following bonding methods is not permitted for normally non–current?carrying metal parts in hazardous classified locations?(Vision grounding and bonding requirements for hazardous locations were found in three different locations )

The NEC now requires a replacement to conductors that have been damaged , for example, overheating and now also references to industry standards _________ to help us evaluate those conductors. (Previously this section focused on conductor protection by physical damage.)

A building service with multiple disconnecting means in separate enclosures is allowed to use a common grounding electrode, with a tap to each disconnect __________. (The format also changed from a dense paragraph to the list-style because of common misapplications and inconsistent interpretations.)

Nonmetallic-Sheathed Cable (Types NM and NMC, Romex) now requires listed products such as _______ be used during installation. (One of the most widely used wiring methods can be damaged by sharp edges or improper sizing.)

In Class I, Division 1 locations, one or more of the wiring methods in__________ shall be used in accordance with the requirements of the sections in the reference column and with the respective wiring?method requirements applied. For example, Type P cable is permitted only in __________ industrial establishments.(This update puts the code into table form for improve usability enabling installers to more clearly determine which wiring methods are allowed )

The construction of an equipotential plane shall comply with which NEC subsections?(This change introduces new detailed construction requirements for a quick potential planes in agricultural buildings )

Outside feeders to one- and two-family dwelling units required a disconnect and an emergency disconnect, a clarification states ______. (Meant to reduce added costs and complexity with simple structures like residential workshops and detached garages.)

A new section now clearly states that _________ cannot be reconditioned and installed. (Seems to come up more frequently now as our electrical equipment ages and natural disasters occur.)

In the 2026 NEC, the new code section for wiring devices is reorganized into how many distinct parts? (The new layout breaks the material into **three clearly separated parts**, making it easier to distinguish:

– **Wiring?device–type switches**
– **Receptacles and cord connectors**
– **Attachment plugs (caps)** )

Ground-Fault protection of equipment shall now also be required for solidly grounded DC systems rated at ______ or more (to address the increasing direct current (DC) systems in modern electrical systems.)

New Article 266 covers feeders over 1000 volts AC or 1500 volts DC. The concept of “supervised installations” was added and permits a reduction in standard conductor sizing. The work of a supervised installation must be performed by ________. (The NEC is working to accommodate these unique high voltage systems.)

Modification of luminaires using retrofit kits is permitted only when the retrofit kit is __________.

For branch circuits over 1000 volts AC that can require servicing, a 125 volt single phase 15- or 20-ampere receptacle outlet shall be available __________. (Generally the receptacle shall not be powered from the load side of the equipment.)

Armored Cable is now required to be supported with approved and listed _________. (Non listed devices can degrade with time under heat.)

The NEC has officially added _________ as a permissible bonding jumper type behind the traditional wire or bus conductors. (This method has been widely used in the field for some time. It is important to use listed fittings and to torque them to manufacturers’ specifications.)

Fixed outdoor electric deicing and snow?melting equipment includes which of the following?

Requiring listing for overcurrent protection on systems rated over 1000 volts AC (medium voltage systems) is a new addition to the NEC with an effective date of _________ for devices 15,000 volts or less. (Historically not listed utility-grade components are now more commonly installed on private premises. The additional time allows for the infrastructure to catch up.)

A recent section change requiring barriers to protect contact to service terminals has been revised to require that these barriers be ______. (To help protect from shock or arc-flush hazards during maintenance or troubleshooting.)

Which of the following statements correctly reflects the revised requirements for reconditioned equipment used in hazardous (classified) locations?

Where cannabis oil booths are provided with a gas detection system installed in accordance with 500.7(K) or 505.8(I), electrical equipment listed for __________ shall be permitted.

Switchboards and switchgear are permitted to be reconditioned if damaged by fire. According to the NEC, what condition must be met before reinstallation?

The NEC essential general requirements for grounding and bonding have been restructured to provide a clear list format, restating clearly that the earth shall not be ________. (Previously this section was in one single dense paragraph. This formatting change should be helpful to all stakeholders.)

When an EES uses more than one on?site power source, which of the following is REQUIRED when any single on?site source is disabled for service?

According to the NEC, which of the following types of equipment is not permitted to be reconditioned?

A new option item ________ was added to address areas where raceways were subject to temperature changes that can cause condensation. (The circulation of warm area such as into a cold storage is the primary cause of condensation in raceways that can then drip into electrical enclosures.)

Ground-Fault Circuit-Interrupter Protection (GFCI) requirements for non-dwelling units clarified ___________ such as an aquarium is required where receptacles are installed within 6 feet. (Revised to reduce confusion and possible unnecessary installation of GFCI protection.)

When using reconditioned switches, not all types are permitted to be installed. Which one is not permitted under the 2026 National Electrical Code?(General?use snap switches fall under the category of wiring devices, and the NEC explicitly prohibits reconditioning of wiring devices )

A new code section for overcurrent protection now covers and introduces the new term “transformer secondary conductors,” and they are permitted to be ________. (This change separates feeder tap conductor from the transformer secondary rules.)

Article 480 applies to which of the following battery installations? (The term standby has been removed to clarify that requirements apply to all battery installations )

According to 2026 NEC which of the following statements correctly describes the rules for installing reconditioned reactors and resistors?

On work surfaces, receptacles shall not be installed in a face?up position unless which condition is met?

An exception for Ground-Fault Circuit-Interrupter Protection (GFCI) requirements for an industrial establishment requires _________. (The electrical industry has been complaining about overapplication of GFCI requirements; this revision reflects that.)

Conductive pavement heating systems shall be designed as which of the following?

Which of the following is REQUIRED for the disconnecting means of a non?moving attraction or portable structure such as a tent, concession, inflatable, or slide?

Which of the following is REQUIRED for lighting installed inside tents, concessions, and similar temporary structures?(Including section 525.25 in the 2026 NEC aims to improve safety . Carnivals circuses fairs and similar outdoor events temporary wiring and lighting system are used often. the 2026 NEC has made two sections with new requirements lamp protection and luminaries for egress lighting )

The NEC restructuring of horticultural lighting into Sections (A) and (B) is based on which voltage threshold?

According to 2026 NEC when a generator set is equipped with a listed overcurrent protective device or a combination of a current transformer and overcurrent relay, conductors are permitted to be tapped from the load side of the protected terminals under which condition?

If a 16 AWG copper conductor is used to supply a branch circuit, the maximum overcurrent protection (circuit breaker) device rating is __________. (This circuit is not allowed to supply receptacle outlets.)

The NEC created Article 270 to cover grounding and bonding for systems over 1000 volts AC or 1500 volts DC. Grounding for systems _________ is now also covered. (These systems can be specialized with increased risk of ground touch potential.)

Essential electrical system (EES) loads must be served by two or more independent sources or sets of power sources and feeders. At least one of these sources must be __________, and additional sources are permitted to be __________.

A new section in Article 300 clarified that the 360 degree limitations on raceway bends between pulling points ______. (Before the 360 degree limitation was only mentioned in each conduit or tubing article and was not clear.)

Overcurrent protective devices serving the Essential Electrical System (EES) must be coordinated for the period of time that a fault’s duration extends beyond which of the following?(The addition of subsection F is a critical enhancement to the National Electric Code in 2026 as it addresses the need for precise coordination of over current protective devices in EES ‘s. This author thinks precise coordination is needed in all applications, who wants a main fuse blowing or circuit breaker turning off everything that you are addressing in whichever system you’re addressing? Life safety of course is more urgent )

If overcurrent protection is not provided at the generator, conductors from generator to the first overcurrent protective device must have an ampacity of at least_________. (This requirement accounts for possible operational overloads or transient surges )

A new section in NEC article 240 identifies what overcurrent protective devices (OCPDs) are suitable and approved for providing branch-circuit, feeder service conductors and electrical equipment including _________. (The intent was to create one location for users that identified the types of breakers and fuses that the NEC recognized.)

The NEC requires central heating equipment to be supplied by an individual branch circuit. Exception No. 1 has been expanded to include which additional type of equipment?

A warning sign is required where removal of a grounding or bonding connection in power?source equipment would interrupt the grounding?electrode?conductor or grounded?conductor connection to another energized source. What must the sign state?

A new mandate requires that when a raceway such as IMC with threads enters an enclosure, a locknut or fitting ______ be installed on the inside and outside of the enclosure. (This rule was buried in the bonding and grounding section so was sometimes not installed as required.)

For a dwelling unit outdoor outlet replacement for listed HVAC equipment, _____________. (This should help this industry with unwanted tripping because standard GFCIs were incompatible.)

Tamper?resistant receptacle requirements have expanded to include which of the following locations in addition to dwelling units?

There is a significant change to the scope of NEC article 404 by including __________.

There are now enhanced marking requirements for one- and two-family residential service disconnects and specifically state that the marking ______. (Some state rules also have additional requirements.)

Essential electrical system (EES) loads shall be served by two or more independent sources or sets of power sources and feeders. At least one of these sources must be __________.

Which of the following best describes the updated GFCI requirement for receptacle outlets in Article 550?(Instead of specifying certain appliances and locations in a mobile or manufactured home the language Changed to reference section 210.8 This completely removes any differences between the old mobile home requirements And stick built home requirements )

Ground-Fault Circuit Interrupter Protection (GFCI) requirements for dwelling units were additionally modified and separated to include ____________. (The intention was to clean up the 2023 language, which was considered confusing.)

According to 2026 enclosures installed in damp or wet locations must be weatherproof. For enclosures in wet locations, raceways or cables entering above the level of uninsulated live parts must use fittings listed for which type of location?(Previously in section 495.3 These requirements are now clearly presented under section 495.4 with a specific title allowing designers, installers and inspectors to identify the applicable rules for damp and what locations easily)